Spring rate help?

FL 4Motion · 08-18-2014, 10:54 PM

I'm a little intimidated to even ask a ? In this thread but I figure this is the brst place to ask so here goes...

Wife just got back from Roebling track event. Complained of really bad understeer.

Car is a nismo on oem suspension with oem sized tires 245/40 19 front and 285/35 19 rears. Wheel offsets are +22 front and +12 rear.

Goal is to have a neutral balanced car, not too loose and eliminate the understeer.

Tires are michelin PSS and car is semi dd so we will be staying with street tires so PSS, re-11 etc type tires.

Based on my feeble understanding from reading this, stepping up to 275/35 fronts and maybe also the Hotchkis front bar (keep oem rear bar) will be good first step.

Next year plan to upgrade to swift spec r springs and spl suspension components. $$$ wallet can only take so much at a time.

Also will be adding the quaife LSD next year prior to the spring upgrade.

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08-18-2014, 10:54 PM	#11 (permalink)
FL 4Motion A True Z Fanatic Join Date: Feb 2009 Location: FL Posts: 4,776 Drives: Baby Shark Rep Power: 701616	I'm a little intimidated to even ask a ? In this thread but I figure this is the brst place to ask so here goes... Wife just got back from Roebling track event. Complained of really bad understeer. Car is a nismo on oem suspension with oem sized tires 245/40 19 front and 285/35 19 rears. Wheel offsets are +22 front and +12 rear. Goal is to have a neutral balanced car, not too loose and eliminate the understeer. Tires are michelin PSS and car is semi dd so we will be staying with street tires so PSS, re-11 etc type tires. Based on my feeble understanding from reading this, stepping up to 275/35 fronts and maybe also the Hotchkis front bar (keep oem rear bar) will be good first step. Next year plan to upgrade to swift spec r springs and spl suspension components. $$$ wallet can only take so much at a time. Also will be adding the quaife LSD next year prior to the spring upgrade.